Question

Triangle $ABC$ is right angled at vertex $A$. Calculate the length (in cm) of $BC$, if $AB=18cm$and $AC=24cm$.

Answer 1

R.E.F image

Solution -

Let $BC=x$

Apply Pythagoras theorem

$(24{)}^2+(18{)}^2=x^2$

$576+324=x^2$

$900=x^2$

$x=30cm$